Paper: Experiments With Corpus-Based LFG Specialization

ACL ID A00-1028
Title Experiments With Corpus-Based LFG Specialization
Venue Annual Conference of the North American Chapter of the Association for Computational Linguistics
Session Main Conference
Year 2000
Authors

Sophisticated grammar formalisms, such as LFG, al- low concisely capturing complex linguistic phenom- ena. The powerful operators provided by such for- malisms can however introduce spurious ambigu- ity, making parsing inefficient. A simple form of corpus-based grammar pruning is evaluated experi- mentally on two wide-coverage grammars, one En- giish and one French. Speedups of up to a factor 6 were obtained, at a cost in grammatical coverage of about 13%. A two-stage architecture allows achiev- ing significant speedups without introducing addi- tional parse failures.